Floral mutants display various deviant phenotypes and, as such, they are appropriate material with which to address the origin and the building of morphological variation. To identify the pivotal developmental stages at which floral variation may originate and to infer the putative associated genetic causes, we studied abnormal flowers in nine cultivars of Aquilegia and Delphinium of Ranunculaceae, a family displaying a high range of floral diversity. Wild-type flowers of the two genera are pentamerous and spurred, but they differ in their overall symmetry (actinomorphy vs. zygomorphy). Floral morphology of their cultivars at different developmental stages up to anthesis was observed, and the putative identity of the perianth organs and vascularization was inferred. Our results show that in the floral mutants in both genera, phyllotaxis was generally conserved, whereas floral organization, vascularization and symmetry were modified. Most of the morphological and anatomical deviations impacted the perianth, including organ number, identity and (spur) elaboration, and also led to the formation of mosaic organs. We hypothesized that the phenotypes of floral mutants in Aquilegia and Delphinium result from genetic alterations affecting frontiers between sets of organs of different identity, homeosis and length of floral meristem activity.

中文翻译：

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同源异形和延迟花分生组织终止可能占的品种异常花雀和耧斗菜（毛茛科）

花卉突变体表现出各种异常的表型，因此，它们是解决起源和形态变异构建的合适材料。为了确定花卉变异可能起源的关键发育阶段并推断可能的相关遗传原因，我们研究了九个Aquilegia和Delphinium品种的异常花毛an科植物，具有丰富的花卉多样性。这两个属的野生型花是五角形的和带动的，但它们的整体对称性不同（放线形与合形）。观察到其花药在不同发育阶段的花的形态，并推断出花被器官的假定身份和血管形成。我们的结果表明，在这两个属的花突变体中，花序一般都被保守，而花的组织，血管化和对称性被修饰。大多数形态和解剖学偏差影响花被，包括器官数目，同一性和（刺）细化，还导致镶嵌器官的形成。我们假设，Aquilegia和翠雀是由遗传变异影响不同身份，同种异体和花分生组织长度的器官集之间的边界而产生的。